设置每个响应的JsonSerializerSettings吗?

问题描述

我有一个MVC 4 Web API.通常，我希望响应返回所有属性，但是有一个地方我只想返回非空值.我可以通过在全局文件中设置 GlobalConfiguration.Configuration 实例的 Formatters.JsonFormatter.SerializerSettings.NullValueHandling 的JsonSerializerSettings来设置这两种行为，但是我想根据两者使用响应.有没有一种简单的方法可以从API控制器操作中配置请求范围?

I have an MVC 4 Web API. Usually I want responses to return all properties, but there is one place I only want to return only non-null values. I can setup either behavior by setting the JsonSerializerSettings of the Formatters.JsonFormatter.SerializerSettings.NullValueHandling of the GlobalConfiguration.Configuration instance in the global file but I want to use both depending on the response. Is there an easy way to configure the request scope from within an API controller action?

推荐答案

通过更改控制器操作以返回HttpResponseMessage，您可以更好地控制特定操作的内容返回方式.例如

By changing your controller action to return HttpResponseMessage you can get more control over how your content is returned for a particular action. e.g.

public HttpResponseMessage Get() {
   var foo = new Foo();

   var objectContent = new ObjectContent<Foo>(foo, new JsonFormatter()
                                {SerializerSettings.NullValueHandling = ???})

    return new HttpResponseMessage() {Content = objectContent};
}

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